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Readout electronics for the Venus TRD at TRISTAN

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8 Author(s)
Y. Fukushima ; Nat. Lab. for High Energy Phys., Ibaraki, Japan ; M. Sakuda ; N. Terunuma ; Y. Watase
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A large cylindrical transistor radiation detector (TRD) has been constructed as a part of the Venus detector for the TRISTAN e+e- collider. The TRD has a total of 2688 channels of readout electronics. The electronics employs the method of charge sensitive preamplifiers and trapezoidal shaping networks. The circuit has typically an 11-b linearity. The gas gain of each X-ray chamber is tracked with an accuracy of ±1% by monitoring 5.9-keV X-ray signals of a 55Fe source. The noise pickup has been minimized. The TRD gives a pion rejection factor of about 13(30) for 90%(80%) electron efficiency over the wide momentum range between 1 and 30 GeV/c. Full details of the readout electronics, the electronics for wire-gain control and the performance of the detector are given

Published in:

IEEE Transactions on Nuclear Science  (Volume:40 ,  Issue: 4 )